**mrTore**hi im making a form with the gallery choice option, and i want to make a calculation with the values from the gallery multiplied with square meters in 6 different sections

but i the sum doesnt come out rigth

what migth i do wrong?

is there a sum button i have to add?

**amy**I need some time to inspect it in detail. I will get back to you soon. Thank you for your patience.

**amy**It seems there is an unnecessary field in the formula of the form calculation widget. Please delete the "

**Price**" field from the form calculation widget's formula and save it.After this, your formula will be working properly. Before I delete the "Price" field, here is the result:

After I delete the "Price" field, here is the result:

I hope it helps.

**mrTore**Hi, im still having a problem With the price on this form. It is correct when i put in one multiple Choice. But when i put in every Field the price is not rigth.

What can i do? I have put in the values in the multiple Choice gallery, which i want to multiply With the choosen square meters in the form for each content

Glad for Your assistance

Tore edland

- JotForm Developer
**Scott**Hey Tore,

In order to achieve this, you can use show/hide conditions and provide the coefficient values of the services in the calculation field.

Conditions may look something like this:

And the calculation should be looking like this:

If you want to investigate this form, you can clone it to your account and test it for your self.

Here is the user guide on how to clone a form from an URL

Let us know if you need anything else,

Cheers!

**mrTore**this was a little complicated for me to understand how to make in the form.

is there tutorial on this function?

- JotForm Support
**Kevin_G**Yes, you may check this guide to get more details about the show/hide conditions: https://www.jotform.com/help/316-How-to-Show-or-Hide-Fields-Base-on-User-s-Answer

You may also clone my colleague's example on this link and inspect what he did there: http://www.jotformpro.com/form/80942828623968

The guide was shared on he previous reply as well.

Please let us know if you need further assistance.

**mrTore**hi again, ive added new calculations in the form, and added a rule witch i think is rigth

ive changed the form abit so now there is a gallery choise as before, but then only one input for square meters.

my hope was to make it easier.

but the math,calculation is still not rigth.

am i missing someplace to make it active?

- JotForm Developer
**Scott**The conditions you have set are overriding the form calculation widget's values.

Please disable/delete the conditions and the calculation should just work fine.